64360139 has 2 divisors, whose sum is σ = 64360140. Its totient is φ = 64360138.

The previous prime is 64360117. The next prime is 64360189. The reversal of 64360139 is 93106346.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64360139 is a prime.

It is not a weakly prime, because it can be changed into another prime (64360189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32180069 + 32180070.

It is an arithmetic number, because the mean of its divisors is an integer number (32180070).

Almost surely, 2^64360139 is an apocalyptic number.

64360139 is a deficient number, since it is larger than the sum of its proper divisors (1).

64360139 is an equidigital number, since it uses as much as digits as its factorization.

64360139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 32.

The square root of 64360139 is about 8022.4771112170. The cubic root of 64360139 is about 400.7488866304.

The spelling of 64360139 in words is "sixty-four million, three hundred sixty thousand, one hundred thirty-nine".